Geissele Automatics Super Duty Mod 1 .300 Blackout AR-15 Complete Upper Receiver - 8" - Black

Geissele Automatics Super Duty Mod 1 .300 Blackout AR-15 Complete Upper Receiver - 8" - BlackThe Geissele Super Duty Mod 1 8" .300 Blackout Complete Upper is a turnkey, hard-use upper built for compact performance and reliability. It pairs a cold-hammer-forged, chrome-lined 1:7 barrel with Geissele's Phased Array Tri-Port gas system, tuned for a pistol-length configuration, for consistent function under demanding conditions. This upper ships complete with a Nanoweapon Reliability-Enhanced BCG (Stressproof bolt), Airborne Charging Handle, and a HUXWRX Flash Hider, QD-threaded 5/8x24, making it ready to run out of the box.The included 7" Super Modular Rail MK16 with center tab provides a rigid, lightweight mounting platform, and the package also includes a braided buffer spring and H1 buffer combo. Built and assembled by Geissele Automatics in Pennsylvania, this Mod 1 upper is an excellent choice for compact .300 BLK builds that require durability and repeatable performance.Features Complete 8" .300 BLK upper with BCG, charging handle, and muzzle device CHF, chrome-lined barrel with 1:7 twist Phased Array Tri-Port gas system with pistol-length configuration Nanoweapon Reliability Enhanced BCG with Stressproof bolt Geissele Airborne Charging Handle included 7" MK16 Super Modular Rail with center tab HUXWRX Flash Hider-QD (5/8x24) included Includes braided buffer spring + H1 buffer comboSpecifications Caliber: .300 Blackout Barrel Length: 8" Barrel Profile: Medium Barrel Finish: Mag Phosphate Twist Rate: 1:7 Gas System: Pistol-length (custom configuration) Handguard: 7" Super Modular Rail MK16 (center tab) Muzzle Device: HUXWRX Flash Hider-QD, 5/8x24 Overall Length: 17 1/8" Weight: Approx. 3.3 lb BCG / Charging Handle: Included Manufacturer: Geissele Automatics (North Wales, PA, USA)